| HUSBAND |
| Thomas Johnson (GLQG-GHL) |
| BIRTH | about 1366 | |
| REF # | | 6826394; |
| REF # | | 7062466; |
| REF # | | 60; |
| MARRIAGE | | |
| |
| WIFE |
| Lady Margaret Douglas (G9GQ-XVG) |
| BIRTH | about 1380 | Castle Mar, Aberdeenshire, Scotland |
| DEATH | about 1425 | Castle Douglas, Lanarkshire, Scotland |
| REF # | | 2639042; |
| REF # | | 2674682; |
| REF # | | 60; |
| MARRIAGE | | Sir Herbert "Herries of Terregles, Baron Caerlaverock" Herries (LZ2B-5MK); |
| FATHER | William Douglas (LZLB-P6K) |
| MOTHER | Margaret Stewart (L9CX-SNH) |